Hinge fob



NTTED STATES PATENT OFFTCE.

CHS. H. ROBISON, OF SYRACUSE, NEV YORK.

HINGE FOR DOORS. C.

Specification of Letters Patent No. 5,608, dated May 30, 1848.

T 0 all whom t may concern Be it known that I, CHARLES H. RorsoN,

of Syracuse, in the county of Onandaga, and State of New York, have invented and added certain Improvements to Hinges for Doors, Gates, &c.; and I do hereby declare the following to be a full, clear, and eXact description thereof, reference being had to the accompanying drawings, making a part of this specication, in which- Figure l, is an elevation of a door and casing having one of my improved hinges connected thereto, and Figs. 2 and 3, are enlarged respective views of the component parts of one of my improved hinges, detached, a portion of one of them being broken out for the purpose of showing concealed parts of the same. The nature of my improvement consists in combining an adjustable semi-circular inclined plane to the portion of the hinge made fast to the casing of a door, or side sustaining post of a gate, and an adjustable roller to the portion of the hinge attached to the door, or gate, in such a manner that the adjustable roller will rest and traverse upon the inclined plane sustaining the weight of the door; and also in such a manner that the inclination of the sustaining plane can be varied, and the position of the door adjusted to conform thereto by means of the adjustable roller, so that the door when closed will always be at the same distance from the threshold.

Similar letters indicate like parts in all the figures.

A, is the portion of the hinge attached to the door casing or gate post.

B, is the portion of the same attached to the door or gate.

C, is the semi-circular inclined plane, combined with the portion A, of the hinge as follows: The ends of the plane C, pass through apertures in A, and its center is supported in a recess at the end of the arm cl, projecting from A, as shown in Fig. 2. From s, to t, is an abrupt inclination on the under edge of C, between which points the plane C, rests in the recess of the arm d. The inclination of c, is varied by moving the same to the right or to the left, causing it to rest upon different portions of the inclination between s and t.

Z, is an ear cast upon the curved plane C, by which it is moved to the right or left.

z', is an ear cast upon A, through which passes the set screw e, and pressing upon the plane c, retains it in any desired position.

m, is a tubular projection cast upon the portion B, of the hinge, which receives t-he screw g, in the upper portion, and the shank 7L, in the lower half thereof.

In, is the bearing friction roller inserted in the lower end of the shank L.

f, is a knob on the upper end of the screw g, by which it is operated, and thereby the roller 7c, raised or lowered and adapted to the different inclinations of the curved plane 0.

The curved adjustable inclined plane c, serves to raise the door or gate upon which my improved hinge may be placed, so high as to allow it to swing clear of all obstructions; and also, in conjunction with the roller 7c, it serves to close the door when left aja-r, and to retain th`e same when thrown wide open, by the reverse inclination at its upper end, as shown in Fig. 1. When the inclination of c, is varied, for the purpose of elevatiog a door or gate, above obstructions, or to cause the same vto be closed with greater or less force; the bearing friction roller lc, must be adjusted to correspond with the same.

Having thus fully described my improvement in hinges for doors, gates, &c., what I claim therein as new, and desire to secure by Letters Patent, is-

The combination of the adjustable curved inclined plane c, with one portion of the hinge, and the adjustable bearing roller 7c, with the other portion thereof, arranged and operatig with each other substantially in the manner and for the purpose herein set forth.

CHAS. H. ROBISON.

Witnesses:

A. C. GRIswoLD, R. MoLwoRTH. 

